Vemo V10-77-1033 Secondary Air Injection Pump Check Valve

Secondary Air Injection Check Valve Overview

The Vemo V10-77-1033 is a pneumatic secondary air injection pump check valve for emission control systems. It uses a non-return valve design and includes a seal for OE-style service on supported Audi, Volkswagen, and related applications.

Built to match the listed OE-style fitments, this VEMO part line focuses on direct replacement components for emission system repair. The V10-77-1033 is specified for the left cylinder bank on select vehicles, including Audi A6 Quattro, Audi A7 Quattro, Audi A8 Quattro, Q5, S4, S5, SQ5, Q7, and Volkswagen Touareg applications.

Key Features

• Pneumatic operating mode for secondary air injection system control
• Non-return valve design helps maintain one-way airflow in the emission system
• Includes seal for installation at the valve interface
• OE-grade replacement for supported Audi and Volkswagen applications
• Compact dimensions: 110 mm length, 95 mm width, 90 mm height
• Vemo part number V10-77-1033 for catalog and fitment lookup

Detailed Product Description

The Vemo V10-77-1033 secondary air injection pump check valve is designed for emission control systems that route air through the secondary air injection circuit. As a pneumatic, non-return valve, it helps regulate airflow direction and supports proper operation of the air injection system on the left cylinder bank of listed vehicles. This part cross-references Standard Ignition DV166 for the same application.

Compatible With 2009-2017 Audi A6 Quattro, left cylinder bank; 2012-2017 Audi A7 Quattro, left cylinder bank; 2013-2017 Audi A8 Quattro, left cylinder bank; 2009-2017 Audi Q5, left cylinder bank; 2010-2017 Audi S5, left cylinder bank; 2014-2017 Audi SQ5, left cylinder bank; 2010-2016 Audi S4, left cylinder bank; 2011-2015 Audi Q7, left cylinder bank; and 2011-2015 Volkswagen Touareg, left cylinder bank.

Common Repair Applications

• Secondary air injection fault codes related to airflow direction
• Check valve leakage in the emission control system
• Air injection pump performance issues caused by backflow
• Failed emissions inspection tied to secondary air system faults
• Replacement of a worn or sticking combi valve on supported vehicles

Installation Notes and Tips

Verify the OE number, engine bank location, and valve style before installation. This Vemo V10-77-1033 is listed for the left cylinder bank and uses a pneumatic operating mode, so confirm the vehicle’s original configuration matches the part before service. Inspect the sealing surface and replace the valve only after the surrounding air injection components are checked for leaks, carbon buildup, or pump damage.

Quality Assurance

VEMO supplies OE-style replacement emission control components, and this valve is cataloged with direct interchange references for application matching. Use the part number V10-77-1033 and the vehicle fitment details above to confirm the correct secondary air injection pump check valve before ordering.